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Old 03-07-2017, 10:02 AM   #1
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Tripping a W58 type resettable Breaker?

How would I intentionally "pull" or trip a single W58 type reset breaker in a 12 volt line for safety or trouble shooting purposes?

All the wiring is behind a panel. Is there a special tool or trick?

Thank you.
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Old 03-07-2017, 10:17 AM   #2
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I'm an electrician and I am wondering why you want to test the re-settable breaker? And what do you mean for "safety"?

If the breaker is listed with UL or ETI then it's been tested at the manufacturer to trip at its rating. If you doubt its integrity replace it with a new one.
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Old 03-07-2017, 12:03 PM   #3
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I think he is not testing the breaker, but working on something that is on the circuit (down line)
The data sheet says they cannot be manually tripped, I would disconnect the battery.

Features
0.5 amp to 30 amp ratings.
Cannot be manually tripped.
Button extends for visual trip indication.
Push button to reset breaker.
Termination is screw or .250 QC.
Bottom marked amperage rating optionally available.

See Data Sheet.
Attached Files
File Type: pdf ENG_DS_1308242_W58_0510.pdf (220.0 KB, 16 views)
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Old 03-07-2017, 04:54 PM   #4
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Quote:
Originally Posted by rgvtexan View Post
I think he is not testing the breaker, but working on something that is on the circuit (down line)
The data sheet says they cannot be manually tripped, I would disconnect the battery.

Features
0.5 amp to 30 amp ratings.
Cannot be manually tripped.
Button extends for visual trip indication.
Push button to reset breaker.
Termination is screw or .250 QC.
Bottom marked amperage rating optionally available.

See Data Sheet.
It would have to be bench tested with a variable loadbank to test it. Yes, disconnect battery or unplug the load side of the breaker. It's UL tested and made by Tyco so the quality is all there.
An aside, I used to own a 1967 MGB-GT. Great little car!
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Old 03-08-2017, 09:35 AM   #5
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Vicr

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Old 03-08-2017, 10:38 AM   #6
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You can test the W58 by grounding the load side of the breaker. However, do you like arc welding? Depending on the amperage of the w58 you should be prepared for a flash, a loud noise and some sparks.

I think if you explained what you want to do with this project, the forum guys can find a better way to do it than what you are attempting. This is not recommended at all. You could damage more stuff than you are attempting to fix. Proceed with caution. This makes no sense.
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Old 03-13-2017, 07:55 PM   #7
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Reset breaker.

It makes sense if I am trying to find a problem down line from the breaker and want it out of the circuit. Very hard to measure resistance with voltage applied.

I will disconnect the battery. I do not enjoy arc welding.

Thank you Rgvtexan for the reply.
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Old 03-13-2017, 08:48 PM   #8
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Good luck trouble shooting. Be safe, Arc Welding can burn.
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